 Front caliper dragging? |
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| Wanna9146 |
 May 13 2008, 09:28 PM
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#1
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Member  Group: Members Posts: 235 Joined: 19-January 08 From: Florida Member No.: 8,595 Region Association: South East States  |
I just rebuilt my front calipers, including new pads. Have yet to re-fill/bleed.
On one side, the hub/rotor spins freely with only slight rubbing of the pads. Feels "normal" as compared to other cars I've worked on. On the opposite side, the hub/rotor does not spin freely. It spins only with some effort. Both rotors measure the same thickness (a little under 10mm). Will this issue fix itself once I re-fill & bleed or is something wrong? |
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| davep |
May 14 2008, 09:08 PM
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914 Historian Group: Benefactors Posts: 5,152 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada  |
Or you could try clamping the piston as far back as possible and wait for the knock-back mechanism to slip back on the pin as far as it is able. All the years I have rebuilt calipers I never had this problem. It may well be a bent pin, but is more likely a sticky mechanism. While you can run without the pin, I don't think it is the best long-term solution. Many race car calipers omitted the pin, and many new designs use an inverted piston, so no pin is possible there. Anyway, both the pin+mechanism and the main seal act together to withdraw the piston. That is helped by any runout (wobble) in the rotor.
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Posts in this topic
Wanna9146 Front caliper dragging? May 13 2008, 09:28 PM
davep push the pistons in May 13 2008, 10:25 PM
Wanna9146
push the pistons in
I did to get the pads in an... May 13 2008, 10:27 PM
Wanna9146
push the pistons in
Well...that was it. I remov... May 16 2008, 08:36 AM SGB
Will this issue fix itself once I re-fill & ... May 13 2008, 10:30 PM Eric_Shea
Sounds like your knock-back mechanism is hanging... May 13 2008, 10:57 PM Wanna9146
Sounds like your knock-back mechanism is hangin... May 13 2008, 11:43 PM Eric_Shea Should be a 20 minute fix if that's what you w... May 14 2008, 01:59 PM Wanna9146
Should be a 20 minute fix if that's what you ... May 14 2008, 07:29 PM Eric_Shea
The pin and knock-back mechanism knock the pisto... May 14 2008, 09:37 PM Wanna9146 I'll give it a go.
As I mentioned, this set o... May 14 2008, 10:45 PM !Wet Spot! You checked the front wheel bearing? May 16 2008, 10:08 AM Wanna9146
You checked the front wheel bearing?
Yes, beari... May 16 2008, 03:06 PM |
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